Installing and building issues since updating to npm@5

[GentlemanHal]

After updating to npm@5 the build starting breaking, it just seems to be doing some really strange stuff with the package-lock.json file.

Locally it seemed to randomly install some packages but not others. I resolved this by manually installing every single package, which was tedious but I thought if I at least managed to create the correct lock file it would work for everyone else. Unfortunately the build still failed on CI, you can see the details and my attempts to fix it. I eventually got the build green with some minor workarounds (manually installing semver in CI scripts).

I assumed this would be OK for the short term, but after trying to update some dependencies the build started breaking all over again. So for now I've worked around the issue by ignoring the package-lock.json file so it behaves more like previous npm versions.

There are 2 TODO comments marked with this issue number in the code that need to be removed once we figure out the correct solution.